As Skuzzy said, a DxDiag output would help. But making wild guesses by the first screenshot makes me think about an underpowered Intel video chip. Why? First, it says Dell. Second, your Windows Experience Index is 1, based on the lowest rating of your system. Since it's visible that you have 4 GB of RAM and an Intel i7 processor, it's obvious that the low rating is that of the video chip.